Compilare: user.cpp: In function ‘bool comparePoints(Point, Point)’: user.cpp:19:36: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] return p1.A<p2.A || p1.A==p2.A && p1.Y>p2.Y; ^ user.cpp: In function ‘int main()’: user.cpp:35:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < points.size(); i++) { ^ user.cpp:36:67: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (minPoint.X > points[i].X || minPoint.Y == points[i].Y && minPoint.Y > minPoint.Y) { ^ user.cpp:40:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < points.size(); i++) { ^ user.cpp:51:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 3; i < points.size(); i++) { ^ user.cpp:58:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < hull.size(); i++) { ^